Sterilizer



J. OCONNELL ET AL 1,745,906

STERILIZER F'ilGd OOt 18, 1927 2 Sheets-Sheet l I Feb. 4, 1930.

J. OCONNELL ET AL STERILIZER Filed OGt.- 18. 1927 2 sheets-sheet Patented Feb. 1930 a method of an 10 oftheone being extr hereinafter re v ofth'e heating medium,

.FUN'ITED T E-Sf PATENT OFFICE irosnrn o'comvnnn Ann HAROLD: HAMILTON Kenn, onfxnnsmeroiv, VICTORIA,

1 1 -AUST3ALIA I I STERILIZERT 1 Application filed ctober 18,'1927, Serial No.

: Thisinvention has been devised toprovide d means for sterilizing liquids, the latter during treatment flows through piping in one direction, and opposite to that one pipe enclosing the =otherfso that during the circulation-of both the liquid under treatment and the heating mediu-m, one is raised in temperature and the other-reduced; this is owing to the heat acted and communicated to the other, the result being that the liquid is discharged. reduced in temperature approximately to the same degree when passed into the regenerative section of the apparatus ferred to. Y Y

To ensure the liquid.undertreatment being thoroughly and eflectivjely sterilized it is'ad vantageous-to hold or retardunderpressure its flow for a desired" period whilst under 0' treatment, this is accomplished" by providing 25. pre

"301 more easily under in whichany suitableautomatic-escape or relief valve held nearly shut by any arrangement exerting' a, definite adjustable pressure so that the valve will. allow the liquid to escape whenthe ssure exceeds a: predetermined amount; furthermore the liquid under treatment is 'graduallyand effectively raised and lowered in temperature. 1 I j 'In -order that our invention' may be the made to the accompanying sheets of drawings Fig. '1- illustrates partly in section appara' tus embodied in this invention.

Fig. 2' is a planpartly'in-section and drawn I to a large scale of regenerative and heating a holding spring herein sections hereinafter, described.

Fig. 3 is a sectional view of the said regen' erative and heatingsections.

, Fig. 4 is an end view of apparatus shown in Figs. 2 and 3. v

Fig. 5 is a perspective'view illustrating the direction of circulation of theliq'uid through the" regenerative and heating sectionshere inafter referred to whilstv Fig. 6 is a view drawn to a large scale ofafter described. In the accompanying drawing 1 is a pipe infcommunicati supply, it being drawn therefrom by a pump stood, reference will be on with the source. of liquid.

eaaeae, and in 2 of any suitable kin uid'through the pipe Australia January 12, i927."

d, which forces the liqsection of the apparatus comprising an arrangement of respectlvely,

cation with e scribed.

inner and outer tubes 3 and such tubes being in communr. ach other as hereinafterde- To produce effective sterilization, care must be taken that such p means to allow for the leakage of the liquid does break or the like in the e. regenerative section,

ossibility 1s, obviated by providing the expansion or contraction of the inner tubes 3 of the regenerative section, at one or both such tubes are of cop per and are free.

ends each of which ne into a hole 6 of'a bend? with screw plugs 8 positioned in front of to facilitate the cleansing. 7 is disposed within a'hea plate 10 integral each tube 3 (seeFigiS) thereof. The bend der 9 bolted to the with that'end ofthe outer iron pipe 'twhose other end is threaded and screwed home plate 12 a packin bolted to'the p (r of sheet rubber 13 being'disposed in the respective hole 11 in the late 13 of a cover 14:.

betweenthe said plates 12 and 13. The cover 14 is provided with passageways 14 for the flow of the liquid'as hereinafterdescribedif The exterior of the cover boxes 15' for 0 tubes 3, which at thi section project for so enters a hole horizontal bend 1 plate 14 has stufiing entrally positioned ends of the 1 "s end of the regenerative. me'distance and each 16 of the vertical bend '17 or 7*, each hole has a stufling box 18. -That endof the tube which de-;

' livers the ster ly and enters ilized liquid a loaded valve 19 (se projects outwardfurnished with suitable means to regulate and control the partly sure of" the valve,

. 20 with an adj shutting and closing pres- 7 preferably a hinged lever ustable weight 21 and set screw 21 -i-s employed. Thesaid lever 20is mounted ona post 22 integral with the valvecasing the lever 20 resting on the top of the valve stem 23; To steady the lever 20and also work in conjunction withpressure isfloperat ng a spring 23 maybe the weight 21 when the employed, one end being connected to the lever 20 and the other'end' connected to "the proj ectingen dof the tube3 '(see' Figs. 1"

2% into a regenerative e Fig. 1) 2 26 and in whichthe inner tube 27is disposed,

the said inner tube passes through the stuffing box 28, thence into the outer tube 29, being connected at this point to the stuffing box 28 by the union 30. The outer tube 29 at its other end is attached to a T-piece 30 which by union and flange constructions .28 and 29 is connected to a similar T-piece 31, both T-pieces 30 and 31 provide communication for the heating agent preferably steam with theother outer tube 29 of the heating section in which the steam enters at 31 (see Fig. 3)

being supplied by the pipe 32 from a boiler.

33, the steam being discharged at 34 (see Fig. 3) and returned to the boiler by the pipe 35, both pipes 32 and 35 have cocks 36 for supply control purpose.

It is essential to have an independent supply of steam to the heating section to ma1ntain the .pressure of the steam to and through the heating section and the flow of the condensed water from the heating section to the boiler 33. The lower tube of the inner tubes 27 of the heating section adjacent to the T- piece construction before referred to passes through the stufling box 37 and enters a bend 37 with stuffing boxes 38 and 38 and the upper tube 27 of the heating section is connected to 38 and passes through a stufiing box 39, connected to the outer tube by the T-piece 31 before referred to, and the other end of the upper tube 27 passes through the stuffing box 37 connected to the pipe 29 by the union 39*, the projecting end of the upper tube 27 enters a stufling box 40 carried by the elbow 41 in communication with a pipe 42 connected byunions 43 to elbow 41 and a similar elbow 44 to which the projecting end of the required inner tube of the tubes 3 of the regenerative section is attached by the stuffing box 45. The tubes 3 and 4 of the regenerative section are arranged in sets of 3 and are parallel (see Fig. 4) the direction of flow of the liquid is shown in Fig. 5, the solid arrows indicate its entry and circulation into and through the tubes 4 and connecting passageways 14 of the regenerative section and its point of discharge from the heating section is marked A, the dotted arrows show the direction of flow of the liquid from A and whilst circulating through the tubes 3 of the regenerative section to the point marked B.

through the tube outer tubes, the inner A thermometer 46 may be employed to measure the temperature of the liquid as it flows 27. Upon leaving the regenerative section, after passing through the desired number of tubes 4, the liquid flows through the elbow 25, thence through the inner tubes 27 of the heating section, preferably one coil for the heating section is employed, and duringits circulation through such heating section it is raised in temperature by the heating agent, the steam flowing through the outer tube 29 in the opposite direction taken by the liquid, the steam as before stated when discharged from the heating section is returned to the boiler 33.

Asthe liquid fiows from the heating section, and upon reaching the elbow 41, the temperature of the liquid is approximately 220 F. as the liquid continues to circulate under pressure from the pump through the posed on the respective tube of the. tubes 3 adjacent to the lower tube 4 and coil of the regenerative section, on passing through the valve 19 the now sterilized liquid flows through the pipe 3 and is led by the branch pipe 19 into a storage tank or the like 46 with control cock at 47 the projecting end of the pipe 3 beyond the pipel9 has a cock at 48 which is closed during sterilizing opera-' tions but opened before starting same as may be necessary to clean out the tubes 3 and 4 of liquid in order that unsterilized liquid will not be mixed with the sterilized liquid.

It will be seen from the above that the circulation of the liquid is under pressure which must be maintained, making its flow gradual, ,and by doing so ensuring an effective treatment of the liquid to provide thorough sterilization thereof.

If it is desired the heating section of the apparatus may be situated at a greater elevation than the boiler in order that the condensed steam may return to the boiler by gravitation.

We would also have it understood that if desired any number of heating and regenerative sections may be employed and the valve and pump aforesaid may be disposed for working operations at any desired point.

laims:

1. Means for sterilizing liquids, comprising a regenerative section having inner and outer tubes, the inner tubes being free at least at one end, a heating section of inner and tubes being in communication with the outer tubes of the regenerative section, passageways for the circulation of the liquid, and means for retarding the flow ofthe liquid throughthe regenerative and heating sections. Y

2. Means for sterilizing liquids, comprising a regenerative section having inner and I culation of the liquid, and means for retard 'ingthe flow of the liquid through the regenerative and heating, sections, consisting of a valve with stem and hinged lever with.

outer tubes, the inner tubes being free at least atone end, a heating section of inner and outer tubes, the inner tubes being in communication with the outer tubes. of the regenerative section, passageways for the ciradjustable weight. and, an adjustable spring.

3. Means for sterilizing liquids, comprising relatively high and low heat interchangq pressure and to normallyretard the flow of mg means, a sterilized liquid discharge pipe, a weighted valve in said pipe, said valve comprising a lever hinged at one end and bearing upon the upper end of a valve stem, n

a spring co-actlng with said valve to prevent the egress of sterilized liquid when under liquid through the said pipe, means to adjust the effective response of the valve by the relative tension of said spring and the position of the weight from the fulcrum of the lever and a regenerative portion in the system the inner tubes of which are free at least at one end, as hereindescribed.

41Means for sterilizing liquids, comprising a regenerative section of sinuous, concentric spaced tubes, means to supply liquid under pressure to the space between thetubes, in combination with a heating section also comprising concentric, spaced tubes, means to connect the space regenerat ve sect1on w1th one end of the inner 35 between the tubes of the tubes of the heater section and connect the other end of the inner tubes of the heater section with the inner tubes of the regenerative section, yielding means at one end of the inner tubes of the regenerator section to normally retard the flow through the latter inner tubes but yielding to pass a greater amount of liquid upon increase of pressure,

, and means to supply a heating medium to the outer tubes of theheater section.

In testimony whereof we have signed our names to this specification;

JOSEPH OCONNELL. HAROLD HAMILTON KERR. 

